Novozymes South Asia Pvt. Ltd. Supplies Nitrate-based Electron Acceptor for Control of Hydrogen Sulfide. Novozymes South Asia Pvt. Ltd. Offers enzymes, microorganism and biopharmaceutical ingredients. Nitrate-based Electron Acceptor for Control of Hydrogen Sulfide is used for controlling odorous and potentially dangerous chemicals such as hydrogen sulfide, mercaptans, and volatile organic acids. Nitrate-based Electron Acceptor for Control of Hydrogen Sulfide includes the volatile fatty acids [VFA] found in various industrial and municipal wastewater treatment systems, such as collection and conveyance infrastructure systems. It can also be used to treat "hot spots" in those applications. Its brand name is BI-CHEM® NITRAID.